Effect of induced uniaxial magnetic anisotropy on ferromagnetic resonance frequency of Fe-Co alloy nanoparticle/polystyrene nanocomposite

Hiroaki Kura; Kotaro Hata; Tadaaki Oikawa; Migaku Takahashi; Tomoyuki Ogawa

doi:10.1016/j.scriptamat.2013.12.018

Effect of induced uniaxial magnetic anisotropy on ferromagnetic resonance frequency of Fe-Co alloy nanoparticle/polystyrene nanocomposite

Hiroaki Kura, Kotaro Hata, Tadaaki Oikawa, Migaku Takahashi, Tomoyuki Ogawa

ENG - Electronic Engineering

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

An Fe-Co nanoparticle assembly with uniaxial nanostructure was successfully obtained as a nanocomposite with polystyrene, which was polymerized in a magnetic field, H_fix (50 kOe), from a mixture of the Fe-Co nanoparticles and styrene monomer. The easy axis of magnetization was parallel to H_fix and the uniaxial magnetic anisotropy field of the nanocomposite was estimated to be 2.5 kOe. The ferromagnetic resonance frequency of the nanocomposite reached 6.8 GHz, which was larger than that of the nanocomposite prepared without H_fix.

Original language	English
Pages (from-to)	65-68
Number of pages	4
Journal	Scripta Materialia
Volume	76
DOIs	https://doi.org/10.1016/j.scriptamat.2013.12.018
Publication status	Published - 2014 Apr

Keywords

Fe-Co nanoparticle
Ferromagnetic resonance
Induced uniaxial magnetic anisotropy
Nanocomposite

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10.1016/j.scriptamat.2013.12.018

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title = "Effect of induced uniaxial magnetic anisotropy on ferromagnetic resonance frequency of Fe-Co alloy nanoparticle/polystyrene nanocomposite",

abstract = "An Fe-Co nanoparticle assembly with uniaxial nanostructure was successfully obtained as a nanocomposite with polystyrene, which was polymerized in a magnetic field, Hfix (50 kOe), from a mixture of the Fe-Co nanoparticles and styrene monomer. The easy axis of magnetization was parallel to Hfix and the uniaxial magnetic anisotropy field of the nanocomposite was estimated to be 2.5 kOe. The ferromagnetic resonance frequency of the nanocomposite reached 6.8 GHz, which was larger than that of the nanocomposite prepared without Hfix.",

keywords = "Fe-Co nanoparticle, Ferromagnetic resonance, Induced uniaxial magnetic anisotropy, Nanocomposite",

author = "Hiroaki Kura and Kotaro Hata and Tadaaki Oikawa and Migaku Takahashi and Tomoyuki Ogawa",

note = "Funding Information: This work was partially supported by a Grant-in-Aid for Scientific Research (S) (21226007) from the Japan Society for the Promotion of Science (JSPS). ",

year = "2014",

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doi = "10.1016/j.scriptamat.2013.12.018",

language = "English",

volume = "76",

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journal = "Scripta Materialia",

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TY - JOUR

T1 - Effect of induced uniaxial magnetic anisotropy on ferromagnetic resonance frequency of Fe-Co alloy nanoparticle/polystyrene nanocomposite

AU - Kura, Hiroaki

AU - Hata, Kotaro

AU - Oikawa, Tadaaki

AU - Takahashi, Migaku

AU - Ogawa, Tomoyuki

N1 - Funding Information: This work was partially supported by a Grant-in-Aid for Scientific Research (S) (21226007) from the Japan Society for the Promotion of Science (JSPS).

PY - 2014/4

Y1 - 2014/4

N2 - An Fe-Co nanoparticle assembly with uniaxial nanostructure was successfully obtained as a nanocomposite with polystyrene, which was polymerized in a magnetic field, Hfix (50 kOe), from a mixture of the Fe-Co nanoparticles and styrene monomer. The easy axis of magnetization was parallel to Hfix and the uniaxial magnetic anisotropy field of the nanocomposite was estimated to be 2.5 kOe. The ferromagnetic resonance frequency of the nanocomposite reached 6.8 GHz, which was larger than that of the nanocomposite prepared without Hfix.

AB - An Fe-Co nanoparticle assembly with uniaxial nanostructure was successfully obtained as a nanocomposite with polystyrene, which was polymerized in a magnetic field, Hfix (50 kOe), from a mixture of the Fe-Co nanoparticles and styrene monomer. The easy axis of magnetization was parallel to Hfix and the uniaxial magnetic anisotropy field of the nanocomposite was estimated to be 2.5 kOe. The ferromagnetic resonance frequency of the nanocomposite reached 6.8 GHz, which was larger than that of the nanocomposite prepared without Hfix.

KW - Fe-Co nanoparticle

KW - Ferromagnetic resonance

KW - Induced uniaxial magnetic anisotropy

KW - Nanocomposite

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DO - 10.1016/j.scriptamat.2013.12.018

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VL - 76

SP - 65

EP - 68

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Effect of induced uniaxial magnetic anisotropy on ferromagnetic resonance frequency of Fe-Co alloy nanoparticle/polystyrene nanocomposite

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